Fusible device.



J. G. MELOON.

FUSIBLE DEVICE.

APPLIOATION FILED Mums, 1912.

1,093,063., Patented A131214", 1914."

WWW-:515555.

' AT1-URN EIY.

entretener @Wm JONATHAN C. MELOON, 0F PROVIDENCE, RHODE ISLAND, ASSIGNORTO GENERAL FIRE EXTINGUISHER COMPANY, OF NEW YORK, N. Y., A CORPORATIONOF NEW vom;

FUSIBLE DEVICE.

specifieatin of Letters Patent. Patented Apr. fel, i914.

Application filed March 28, 1912. Serial No. 686,790.

certain new and useful Improvements .in Fusible Devices; and I do-hereby declare the following specification, t-ken in connection withthe accompanying drawings, forming apart of the same, to be a full,clear,

and exact description thereof.

The invention relates to a fusible device adapted to be employed inconnection with automatic fire extinguishing' apparatus; as`

for example to hold open fire-doors or shutters-or in other relationswhere a fusible link is employed.

The object of the invention is to strengthen the fusible solder-jointbetween the members of the device without diminishing the sensitivenessof the device to heat and at the same time to facilitate the free flowof the solder over all of the opposing surfaces. y

y'lio that end the invention consists in the novel construction andcombination'of parts hereinafter described and claimed and moreparticularly set forth in the claims. y

In describing the invention reference will be made to the accompanyingdrawings,` inwhich-d Figure 1 is a 'top plan view of a fusible deviceembodying the invention in its preferred form. Fig. 2 is an edge View.Fig.

3 is a transverse sectional view on line ase-4U,

., edge view of the same.

Fig. 1. Fig. 4 is a plan view of oneof the members of the fusibledevice. Fig. 5 isvan Fig. 6 is a plan view` of the other'member. Fig. 7is an edge View of the same. Figs. 8, 9, an'd l0' are plan views ofmodified forms. Fig'. 11 is a longitudinal sectional view on line rf-i,Fig. l0.

Referring to the drawings, the fusible device consists of two members land 2 adapted tobe secured together by fusible solder. The member 1` is`a double or two-partmember and the member 2 is a single or one-partmember which is constructed and adapted to be inserted between thetwo-part member and soldered thereto.'

i The single memberQ is likewise provided with a. similar eyelet 4. Theportions of both members Jl and 2 which arevarranged and adapted toengage each other are provided with. a series of transverse holes orperforations 5 which register with each other. These holes 5 furnishegress for the air when the parts are squeezed together in the solderingoperation, thereby insuring a free flow ofthe solder over all of theopposing y surfaces and the solder flows into said holes and is formedinto a series of interlocking transverse tongues or projections whichserve to increase the strength of the' link against tensile strain.l y

Both legs of the two part member l are lpreferably provided upon onesidewith a series of indentations 6 which produce af series of protuberances7 upon the opposite Vside, as shownjin Fig. 5. The one-part member 2 isalso `provided on one side with a series of similar indentations 8 whichpro# duce a series of protuberances 9 upon the4 oppositeside, as shownin Fig. '7. These indentations and protuberanccs are so arranged andlocated that when the two members l and 2' of the link are assembled.to-' gether the series of pro-tuberances) upon one side of the one-partmember 2 will enter the series of indentations 6 in one leg of thetwo-part member l, while the series of ilidentations 8 in the oppositeside of said onepart member 2 will be engaged by the series ofvprot-uberances 7 upon the other leg. of said two-part member l, as shownin Fig. 3. rlhese indentations and resulting protuberances provideinterlocking means `between the two members l and 2 formed from themetal of the members themselves andl thus serve to stillfurther increasethe strength of the link against tensile strain. It is pre,-

ferred to form the indentat-ions and result ing protuberancesconico-hemispherical in tuberances and also a. series of holes 5, said vholes being formed both in the protuberances'and bet'ween them, but ifdesired the holes G may be formed only in said protuberances, as shownin Fig. 8, or only between said protuberances as shown in Fig. l0.

Figs. 10 and 11 show a modified construction in which each of the twolegs of the two-part member 1 is provided with an indentation 6 on itsinner side, while t-he onepart member is provided with two indentations8 one on each side thereof, thereby producing protuberances 9 uponopposite sides which protuberances 9 are so arranged and located thatwhen the two members 1 and 2 of thelink are assembled together,

vone of the prot-uberances 5) on the oneeleg member 2 will enter theindentation (5 in one of the legs of the two-part member l,

while the other protuberance J will enter with an annular protuberancein one sideV arranged to register with the indentation Ain the leg ofsaid two-part member.

2. An article of t-he character described comprising a'twopart memberhaving two legs and provided with a conicohemispher ical indentation inone side and a conieohemispherical protuberance in the opposite side ofeach leg, and a one-part member adapted to be inserted'bctween the legsof said two-part member and provided with a protuberanee on one sidearranged to enter the indentation in one leg of said two part member andprovided with anv indentation on the opposite side arranged to beengaged by the protuberance upon the other leg of said two-part member.

8. An article of the character described comprising a two-partmemberhaving two legs and provided with a series of conicohemisphericalindentations in one side and a series of conico-hemispherical protuber-:mees in the opposite side of each leg, and

a one-parl'J member adapted to be inserted between the legs of saidtwopart member and provided with a series of protuberances on one sidearranged to enter the indenta- 4. An article of the character describedcomprising a two-part member having two legs and providedvwit-ha seriesof indentations and a series of protuberances in each leg and a seriesof holes arranged both 1n ,and between said protuberanees, and a onepartmember adapted to be inserted between the legs of said two part memberland provided with a series of protuberances arranged t-o enter theindentations in one leg of said two-part member, a series of finden--tations arranged to be engaged by the protuberances upon the other legof said twopart member and a series of holes in and between said pro Yoerances arranged to register wit-h the holes in both legs of saidtwopart member.

5. An article of the character described 'comprising a two-part memberhaving two legs and provided with an eyelet extending through both legsof said two-part member and an annular indentation in one of said legshaving a cam-surface, and a one-part member adapted to be insertedbetween the legs of said two-part member provided with anannularprotuberance having a cam surface arranged and adapted to engage the camsurface on the indentation in said twol

